SF6 Gas Quantitative Charged Detection System Based on ICD Ion Capture

Abstract

The present invention discloses an SF6 gas quantitative charged detection system based on ICD electro-ion capture, which relates to the technical field of SF6 gas charged detection. In order to solve the problem of inaccurate detection data when detecting SF6 gas. The high-energy electrons generated by high-voltage pulses in the present invention can effectively ionize air molecules, and then interact with the sampled gas molecules to form negative ions. This process enables even trace amounts of SF6 gas to be effectively detected, improving the sensitivity of the system. In the detection of SF6 gas, the specific negative ion formation and migration processes enable the system to highly selectively identify SF6 gas, reducing the interference of other gases. Since the ionization and migration processes occur very rapidly, the presence and concentration changes of SF6 gas can be detected in real time. By conductivity calculation, not only the concentration of SF6 gas can be detected, but also other physical or chemical properties of the gas may be indirectly reflected.

Description

Technical Field

[0001] The present invention relates to the technical field of on-line detection of SF6 gas, and specifically to an SF6 gas quantitative on-line detection system based on ICD electro-ion capture. Background Art

[0002] On-line detection of SF6 gas refers to a technical means for on-site detection of SF6 (sulfur hexafluoride) gas and its related parameters during the operation of power equipment.

[0003] The patent application with the publication number CN116840340A discloses a gas detection device and method. By mainly using a first sensor and a second sensor, and by making the first sensor work intermittently, the usage frequency of the first sensor is reduced, thereby prolonging the service life of the first sensor. The processing module for processing data can at least construct a calibration model based on the first gas data and the second gas data collected at the same time point. The processing module calibrates the second gas data collected in real time by the second sensor based on the calibration model, so as to obtain the detection result of the gas detection device for organic volatile gases. Although the above patent solves the problem of gas detection, there are still the following problems in actual operation:

[0004] 1. The patent with the publication number CN116840340A uses the photoionization technology to detect SF6 gas. Compared with the ICD technology, in addition to different principles and implementation methods, the photoionization technology has insufficient detection sensitivity for the detected gas and is easily interfered by background gases.

[0005] 2. The detected gas is not effectively analyzed, resulting in the inability to accurately evaluate according to the gas analysis results.

[0006] 3. There is no targeted early warning judgment for the detected SF6 gas, resulting in the inability of the staff to perform early warning operations in time. Summary of the Invention

[0007] The purpose of the present invention is to provide an SF6 gas quantitative on-line detection system based on ICD electro-ion capture. The ICD electro-ion capture technology has extremely high detection sensitivity for compounds with strong electronegativity such as SF6, and its detection limit can reach a very low concentration level. ICD can accurately distinguish SF6 gas from other non-target gases, improving the selectivity of detection. Once the sampled gas enters the electro-ion detection device, it can quickly react with positive ions and free electrons to form negative ions and be detected. This rapid response mechanism enables the system to reflect the concentration change of SF6 gas in real time. Through conductivity calculation, not only the concentration of SF6 gas can be detected, but other physical or chemical properties of the gas can also be indirectly reflected, which can solve the problems in the prior art.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] An SF6 gas quantitative charged detection system based on ICD ion capture, comprising:

[0010] An SF6 gas sampling preparation unit, for:

[0011] Using an ion detection device to perform gas sampling in the gas monitoring area, and before performing gas sampling, performing a function detection on the ion detection device, and performing gas sampling after the function detection is qualified;

[0012] An SF6 gas detection unit, for:

[0013] Using ICD to detect the sampled gas and labeling the detected gas as the target detection gas;

[0014] An SF6 gas analysis unit, for:

[0015] Performing signal data conversion on the target detection gas, obtaining the concentration data of the target detection gas after signal data conversion, performing data anomaly screening based on the concentration data, and obtaining SF6 gas analysis data after data anomaly screening;

[0016] An SF6 gas alarm transmission unit, for:

[0017] Differentiating the warning levels of the SF6 gas analysis data, generating a warning report for the SF6 gas analysis data in different warning levels, and performing alarm processing according to the warning report.

[0018] Preferably, the SF6 gas sampling preparation unit includes:

[0019] A detection device function detection module, for:

[0020] The ion detection device includes a lighting lamp, a lithium battery, a display screen, a sensor, a sampling probe and an alarm;

[0021] Before the sampling probe performs gas sampling in the gas monitoring area, first perform function detection on the lighting lamp, lithium battery, display screen, sensor, sampling probe and alarm;

[0022] Among them, the lighting lamp performs lighting state and dark simulation detection; the lithium battery performs power, battery life and charging function detection; the display screen performs clarity, brightness and touch response detection; the sensor performs calibration, zero point and sensitivity detection; the sampling probe performs airtightness, cleanliness and sampling performance detection; the alarm performs threshold and response detection;

[0023] After the lighting lamp, lithium battery, display screen, sensor, sampling probe, and alarm are respectively inspected and qualified, gas sampling preparation is carried out.

[0024] Preferably, the touch response detection of the display screen includes:

[0025] Real-time collect the touch response duration corresponding to the touch process of the display screen;

[0026] Compare the touch response duration corresponding to each touch of the display screen with a preset response duration threshold;

[0027] When the touch response duration corresponding to the touch of the display screen exceeds the preset response duration threshold, then record in real time the touch response duration corresponding to each subsequent touch of the display screen after the touch response duration exceeds the preset response duration threshold;

[0028] Obtain a touch response evaluation parameter using the touch response duration corresponding to each subsequent touch of the display screen after the touch response duration exceeds the preset response duration threshold;

[0029] Among them, the touch response evaluation parameter is obtained through the following formula:

[0030] ;

[0031] Among them, E represents the touch response evaluation parameter; n represents the number of touches of the display screen after the touch response duration exceeds the preset response duration threshold; T i represents the touch response duration corresponding to the i-th touch of the display screen after the touch response duration exceeds the preset response duration threshold; T i-1 represents the touch response duration corresponding to the (i - 1)-th touch of the display screen after the touch response duration exceeds the preset response duration threshold; T y represents the preset response duration threshold; T m represents the touch response duration corresponding to when the touch response duration corresponding to the touch of the display screen exceeds the preset response duration threshold;

[0032] Compare the touch response evaluation parameter with a preset evaluation parameter threshold;

[0033] When the touch response evaluation parameter exceeds the preset evaluation parameter threshold, then perform a touch response abnormal alarm;

[0034] When the touch response evaluation parameter does not exceed the preset evaluation parameter threshold, then perform a secondary touch response abnormal judgment using the touch response duration corresponding to each previous touch of the display screen before the touch response duration exceeds the preset response duration threshold.

[0035] Preferably, when the touch response evaluation parameter does not exceed the preset evaluation parameter threshold, the touch response duration corresponding to each touch on the display screen before the touch response duration exceeds the preset response duration threshold is used to perform a secondary touch response abnormality determination, including:

[0036] Extract the touch response evaluation parameter;

[0037] Extract the preset response duration threshold;

[0038] Use the touch response evaluation parameter to adjust the preset response duration threshold to obtain an adjusted response duration threshold, and use the adjusted response duration threshold as the second response duration threshold;

[0039] Among them, the adjusted response duration threshold is obtained through the following formula:

[0040] ;

[0041] Among them, T yt represents the adjusted response duration threshold; T y represents the preset response duration threshold; T m represents the touch response duration corresponding to when the touch response duration corresponding to the touch display screen exceeds the preset response duration threshold; E represents the touch response evaluation parameter; E0 represents the preset evaluation parameter threshold;

[0042] Extract, from the touch response duration corresponding to each touch on the display screen before the touch response duration exceeds the preset response duration threshold, the touch response duration that does not exceed the preset response duration threshold but exceeds the second response duration threshold;

[0043] Use the touch response duration that does not exceed the preset response duration threshold but exceeds the second response duration threshold as the second touch response duration data;

[0044] Use the second touch response duration data to perform a secondary touch response abnormality determination.

[0045] Preferably, using the second touch response duration data to perform a secondary touch response abnormality determination includes:

[0046] Retrieve the second touch response duration data;

[0047] Use the second touch response duration data to obtain an evaluation parameter adjustment coefficient;

[0048] Among them, the evaluation parameter adjustment coefficient is obtained through the following formula:

[0049] ;

[0050] Among them, ξ represents the evaluation parameter adjustment coefficient; m represents the number of data corresponding to the second touch response duration data; T y represents the preset response duration threshold; T yt represents the adjusted response duration threshold; E represents the touch response evaluation parameter; T j represents the data value corresponding to the j-th second touch response duration data;

[0051] Adjust the touch response evaluation parameter by using the evaluation parameter adjustment coefficient to obtain the adjusted touch response evaluation parameter; among them, the adjusted touch response evaluation parameter is obtained through the following formula:

[0052] ;

[0053] Among them, E t represents the adjusted touch response evaluation parameter; E represents the touch response evaluation parameter; ξ represents the evaluation parameter adjustment coefficient; ε represents the preset minimum constant, which is used to prevent the value of the function inside the square root from being 0; T yt represents the adjusted response duration threshold; T y represents the preset response duration threshold; T m represents the touch response duration corresponding to when the touch response duration of the touch display screen exceeds the preset response duration threshold; T max represents the maximum value of the touch response duration corresponding to each touch of the display screen before the touch response duration exceeds the preset response duration threshold;

[0054] Compare the adjusted touch response evaluation parameter with the preset evaluation parameter threshold;

[0055] When the adjusted touch response evaluation parameter exceeds the preset evaluation parameter threshold, a touch response abnormality alarm is performed.

[0056] Preferably, the SF6 gas sampling preparation unit further includes:

[0057] A gas sampling module for:

[0058] Design a sampling pump at the rear end of the sampling probe built in the device. The measured gas sample collected by the sampling pump enters the ionization detection device through the air inlet, and automatic initialization verification is performed after the device power is turned on;

[0059] After the verification is completed, a confirmation sampling operation is performed on the display screen;

[0060] Place the sampling probe in the gas monitoring area. After placement, the gas in the gas monitoring area naturally diffuses into the sampling probe;

[0061] After the gas diffuses to the sampling probe, the sampling completion is displayed on the display screen, and then the sampled gas is detected.

[0062] Preferably, the SF6 gas detection unit is further configured to:

[0063] Detect the sampled gas by using the ICD electro-ion capture technology for the sampled gas;

[0064] Among them, the sampling gas detection process is as follows:

[0065] S1: The high-voltage pulse generator in the electro-ion detection device generates high-voltage pulses. The high-voltage pulses serve as ion sources and simultaneously generate high-energy electrons;

[0066] S2: When the air in the electro-ion detection device passes through the high-voltage pulse, the high-energy electrons ionize the air molecules, generating positive ions and free electrons;

[0067] S3: When the sampled gas enters the ionization region in the electro-ion detection device through the air pump, the free electrons interact with the sampled gas molecules and attach to the gas molecules to form negative ions;

[0068] S4: The positive ions and negative ions migrate in opposite directions in the electric field. After migration, a current is obtained. At the same time, the negative ions recombine with the positive ions after air ionization and form neutral molecules, changing the current magnitude. The concentration of SF6 gas is detected according to the current magnitude;

[0069] Finally, the obtained current is marked as the target detection gas.

[0070] Preferably, the SF6 gas analysis unit includes:

[0071] An electrical signal conversion module for:

[0072] Calculating the conductivity of the target detection gas;

[0073] Among them, a conductance detection sensor is used to confirm the current value in the target detection gas;

[0074] Calculating the voltage signal in the target detection gas through Ohm's law;

[0075] Amplifying the voltage signal through an amplifier and performing noise reduction processing through a filter after amplification;

[0076] After noise reduction, the concentration data in the target detection gas is obtained.

[0077] Preferably, the SF6 gas analysis unit further includes:

[0078] A concentration data abnormal screening module for:

[0079] Retrieve the standard concentration data of the gas monitoring area from the database;

[0080] Perform curve data conversion on the standard concentration data and the concentration data in the target detection gas;

[0081] Perform curve overlap comparison after curve data conversion;

[0082] Obtain the maximum value and average value of the ions of SF6 gas in the gas monitoring area according to the curve overlap comparison result;

[0083] Among them, when performing curve overlap comparison, take the average value of each overlapping curve intersection point as the average value of the ions of SF6 gas, and take the value not within the preset range of the curve data of the standard concentration data as the maximum value of the ions of SF6 gas, and the maximum value is abnormal data;

[0084] Store the maximum value and the average value independently, and generate a unique number during independent storage;

[0085] And label the maximum value and the average value as SF6 gas analysis data.

[0086] Preferably, the SF6 gas alarm transmission unit includes:

[0087] An early warning level differentiation module for:

[0088] Calculate the leakage rate and annual leakage rate of the SF6 gas analysis data;

[0089] Take the calculation results of the leakage rate and annual leakage rate as early warning data;

[0090] Compare the early warning data with the safety data;

[0091] Judge the early warning level of the early warning data according to the comparison result;

[0092] The early warning levels are divided into first-level alarm, second-level alarm and third-level alarm;

[0093] A report generation and transmission module for:

[0094] Generate text and images for the early warning data in the early warning level, where the images include bar charts, line charts and pie charts;

[0095] Transmit the generated text and image signals to the handheld monitoring terminal and the ion detection device for display, and perform different types of alarms on the handheld monitoring terminal and the ion detection device according to the different early warning levels while displaying.

[0096] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0097] The SF6 gas quantitative charge detection system based on ICD ion capture, provided by this invention, ensures the integrity and reliability of the entire detection system by comprehensively testing each component. This system enables comprehensive, real-time monitoring of SF6 gas concentration, and features automatic initialization and verification, simplifying the operational process and reducing human error. Furthermore, the system automatically performs detection after sampling, eliminating the need for manual intervention and improving work efficiency.

[0098] 2. The SF6 gas quantitative charge detection system based on ICD ion capture provided by this invention uses high-energy electrons generated by high-voltage pulses to effectively ionize air molecules, which then interact with sampled gas molecules to form negative ions. This process enables the effective detection of even trace amounts of SF6 gas, improving the system's sensitivity. During SF6 gas detection, the specific negative ion formation and migration process enables the system to highly selectively identify SF6 gas, reducing interference from other gases. Because the ionization and migration processes occur very rapidly, the presence and concentration changes of SF6 gas can be detected in real time.

[0099] 3. The SF6 gas quantitative charge detection system based on ICD ion capture provided by the present invention can not only detect the concentration of SF6 gas through conductivity calculation, but also indirectly reflect other physical or chemical properties of the gas. The conductivity detection sensor is highly sensitive to current changes and can capture tiny changes in gas concentration, thereby achieving accurate detection of SF6 gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0100] Figure 1 Schematic diagram of the SF6 gas quantitative charge detection unit of the present invention;

[0101] Figure 2 Schematic diagram of the SF6 gas ICD ion capture steps of the present invention. DETAILED DESCRIPTION

[0102] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0103] In order to solve the problem that the detection method used in the existing technology for detecting ions in SF6 is not accurate enough, which leads to the destruction of SF6 gas components, please refer to Figure 1 and Figure 2 , this embodiment provides the following technical solutions:

[0104] SF6 gas quantitative charged detection system based on ICD ion capture, comprising:

[0105] SF6 gas sampling preparation unit, for:

[0106] Using an ion detection device to perform gas sampling in the gas monitoring area, and performing a function test on the ion detection device before gas sampling. After the function test is qualified, gas sampling is carried out;

[0107] SF6 gas detection unit, for:

[0108] Using ICD to detect the sampled gas and labeling the detected gas as the target detection gas;

[0109] SF6 gas analysis unit, for:

[0110] Converting the signal data of the target detection gas. After the signal data conversion, the concentration data of the target detection gas is obtained. According to the concentration data, data anomaly screening is carried out. After the data anomaly screening, SF6 gas analysis data is obtained;

[0111] SF6 gas alarm transmission unit, for:

[0112] Differentiating the warning levels of the SF6 gas analysis data, generating warning reports for the SF6 gas analysis data in different warning levels, and performing alarm processing according to the warning reports.

[0113] Specifically, through the comprehensive detection of each component by the SF6 gas sampling preparation unit, the integrity and reliability of the entire detection system are ensured. Through the SF6 gas detection unit, the positive ions and free electrons have a specific capture effect on the SF6 molecules in the sampled gas, forming negative ions. This specific capture mechanism enables ICD to accurately distinguish SF6 gas from other non-target gases, improving the selectivity of detection. Through the SF6 gas analysis unit, it can be adjusted according to different monitoring requirements and safety standards to ensure that the system can accurately capture abnormal situations. Through the SF6 gas alarm transmission unit, according to different warning levels, the system can give alarms in different ways on the handheld monitoring terminal and the ion detection device. Among them, ICD is an ion capture device, and the SF6 gas is detected according to the ion capture technology in the ion capture device.

[0114] SF6 gas sampling preparation unit, including:

[0115] Detection device function detection module, for:

[0116] The ion detection device includes a lighting lamp, a lithium battery, a display screen, a sensor, a sampling probe and an alarm;

[0117] Before the sampling probe samples the gas in the gas monitoring area, the functions of the lighting lamp, lithium battery, display screen, sensor, sampling probe and alarm are detected first;

[0118] Among them, the lighting lamp is detected for its lighting state and dark simulation; the lithium battery is detected for its power, endurance and charging functions; the display screen is detected for its clarity, brightness and touch response; the sensor is detected for calibration, zero point and sensitivity; the sampling probe is detected for airtightness, cleanliness and sampling performance; the alarm is detected for threshold and response;

[0119] After the lighting lamp, lithium battery, display screen, sensor, sampling probe and alarm are respectively detected as qualified, the gas sampling preparation is carried out.

[0120] Specifically, the ion detection equipment is mainly applied to the leakage detection of GIS and SF6 gas-filled equipment in the power industry. Among them, the ion detection equipment detects the trace concentration ratio (ppm) of the leaked gas, and can also convert it to display the size of the leakage amount in units of gas flow ml / s.

[0121] Specifically, the touch response detection of the display screen includes:

[0122] Real-time collect the corresponding touch response duration during the touch process of the display screen;

[0123] Compare the touch response duration corresponding to each touch of the display screen with a preset response duration threshold;

[0124] When the touch response duration corresponding to the touch of the display screen exceeds the preset response duration threshold, then record in real time the touch response duration corresponding to each subsequent touch of the display screen after the touch response duration exceeds the preset response duration threshold;

[0125] Obtain a touch response evaluation parameter by using the touch response duration corresponding to each subsequent touch of the display screen after the touch response duration exceeds the preset response duration threshold;

[0126] Among them, the touch response evaluation parameter is obtained by the following formula:

[0127] ;

[0128] Among them, E represents the touch response evaluation parameter; n represents the number of touches of the display screen after the touch response duration exceeds the preset response duration threshold; T i represents the touch response duration corresponding to the i-th touch of the display screen after the touch response duration exceeds the preset response duration threshold; T i-1 represents the touch response duration corresponding to the (i - 1)-th touch of the display screen after the touch response duration exceeds the preset response duration threshold; T ydenotes a preset response duration threshold; T m denotes the touch response duration corresponding to when the touch response duration of the touch display screen exceeds the preset response duration threshold;

[0129] Compare the touch response evaluation parameter with a preset evaluation parameter threshold;

[0130] When the touch response evaluation parameter exceeds the preset evaluation parameter threshold, a touch response anomaly alarm is triggered;

[0131] When the touch response evaluation parameter does not exceed the preset evaluation parameter threshold, the touch response duration corresponding to each touch of the display screen before the touch response duration exceeds the preset response duration threshold is used to perform a secondary touch response anomaly determination.

[0132] The technical effects of the above technical solution are as follows: By collecting the touch response duration during the touch process of the display screen in real time, the changes in the touch response can be quickly captured, thereby promptly discovering problems. Setting a preset response duration threshold and comparing it with the response duration of each touch can initially screen out situations where the touch response is abnormal. When the touch response duration exceeds the threshold, further record and analyze the response duration of subsequent touches, which helps to more accurately determine whether the anomaly persists.

[0133] By introducing the touch response evaluation parameter E, the abnormal degree of the touch response is quantitatively evaluated. This parameter comprehensively considers the touch response durations of multiple touches after the anomaly occurs, as well as the touch response duration and the preset threshold when the anomaly occurs, and can more comprehensively reflect the abnormal situation of the touch response. When the touch response evaluation parameter exceeds the preset evaluation parameter threshold, a touch response anomaly alarm is triggered to remind the user or maintenance personnel to handle it in a timely manner. If the touch response evaluation parameter does not exceed the threshold, the previous touch response duration is used for secondary judgment to further ensure the accuracy and reliability of the judgment. By promptly detecting and alarming touch response anomalies, it is possible to avoid a decline in the user experience caused by problems such as touch insensitivity or delay. At the same time, through quantitative evaluation and secondary judgment, the problem can be more accurately located and processed, reducing the situations of false alarms and missed alarms.

[0134] In summary, through steps such as real-time collection, anomaly detection, quantitative evaluation, alarm, and secondary judgment, the above technical solution realizes the effective monitoring and processing of the touch response of the display screen, improving the reliability of the display screen and the user experience.

[0135] Specifically, when the touch response evaluation parameter does not exceed the preset evaluation parameter threshold, the touch response duration corresponding to each touch of the display screen before the touch response duration exceeds the preset response duration threshold is used to perform a secondary touch response anomaly determination, including:

[0136] Extract the touch response evaluation parameter;

[0137] Extract the preset response duration threshold;

[0138] Use the touch response evaluation parameter to adjust the preset response duration threshold to obtain an adjusted response duration threshold, and use the adjusted response duration threshold as the second response duration threshold;

[0139] Among them, the adjusted response duration threshold is obtained through the following formula:

[0140] ;

[0141] Among them, T yt represents the adjusted response duration threshold; T y represents the preset response duration threshold; T m represents the touch response duration corresponding to when the touch response duration of the touch display screen exceeds the preset response duration threshold; E represents the touch response evaluation parameter; E0 represents the preset evaluation parameter threshold;

[0142] Extract, from the touch response duration corresponding to each touch on the display screen before the touch response duration exceeds the preset response duration threshold, the touch response duration that does not exceed the preset response duration threshold but exceeds the second response duration threshold;

[0143] Use the touch response duration that does not exceed the preset response duration threshold but exceeds the second response duration threshold as the second touch response duration data;

[0144] Use the second touch response duration data to perform secondary touch response anomaly judgment.

[0145] The technical effect of the above technical solution is: By introducing the touch response evaluation parameter to dynamically adjust the preset response duration threshold, an adjusted response duration threshold is obtained. This dynamic adjustment method takes into account the previous touch response situation, making the threshold more in line with the touch response characteristics of the current display screen, and improving the accuracy and flexibility of judgment. Among the touch data before the touch response duration exceeds the preset response duration threshold, further screen out the touch response duration that does not exceed the preset threshold but exceeds the adjusted threshold as the second touch response duration data. This step helps to distinguish touch response anomalies of different degrees in detail, avoids overreacting to minor anomalies, and can also capture touch responses that are close to the abnormal state.

[0146] Using the second touch response duration data to perform secondary touch response anomaly judgment can further confirm whether there is an anomaly in the touch response. Since this judgment is based on more detailed screening and dynamically adjusted thresholds, the accuracy of the judgment is improved. After initially judging that there is an anomaly in the touch response, this technical solution does not immediately draw a conclusion. Instead, it adjusts the threshold according to the touch response evaluation parameters and performs a secondary judgment. This processing method makes the entire judgment process more rigorous and comprehensive, avoiding false alarms or missed reports caused by a single judgment error. Through timely touch response anomaly detection and a detailed judgment process, touch response problems can be discovered and processed in a timely manner, avoiding a decline in the user experience caused by problems such as insensitive touch or delay. At the same time, dynamically adjusting the threshold and carefully screening anomalies also helps to reduce the situation of false alarms and missed reports, further improving user satisfaction.

[0147] In summary, through steps such as dynamically adjusting the threshold, carefully screening anomalies, and performing secondary judgment, this technical solution realizes more accurate and comprehensive monitoring and processing of the touch response of the display screen, improving the reliability of the display screen and the user experience.

[0148] Specifically, using the second touch response duration data to perform secondary touch response anomaly judgment includes:

[0149] Retrieve the second touch response duration data;

[0150] Use the second touch response duration data to obtain an evaluation parameter adjustment coefficient;

[0151] Among them, the evaluation parameter adjustment coefficient is obtained through the following formula:

[0152] ;

[0153] Among them, ξ represents the evaluation parameter adjustment coefficient; m represents the number of data corresponding to the second touch response duration data; T y represents the preset response duration threshold; T yt represents the adjusted response duration threshold; E represents the touch response evaluation parameter; T j represents the data value corresponding to the jth second touch response duration data;

[0154] Use the evaluation parameter adjustment coefficient to adjust the touch response evaluation parameter to obtain the adjusted touch response evaluation parameter; among them, the adjusted touch response evaluation parameter is obtained through the following formula:

[0155] ;

[0156] Among them, E trepresents the adjusted touch response evaluation parameter; E represents the touch response evaluation parameter; ξ represents the evaluation parameter adjustment coefficient; ε represents a preset minimum constant used to prevent the value of the function inside the square root from being 0; T yt represents the adjusted response duration threshold; T y represents the preset response duration threshold; T m represents the touch response duration corresponding to when the touch response duration of the touch display screen exceeds the preset response duration threshold; T max represents the maximum value of the touch response duration corresponding to each touch of the display screen before the touch response duration exceeds the preset response duration threshold;

[0157] Compare the adjusted touch response evaluation parameter with the preset evaluation parameter threshold;

[0158] When the adjusted touch response evaluation parameter exceeds the preset evaluation parameter threshold, a touch response abnormality alarm is triggered.

[0159] The technical effect of the above technical solution is as follows: By introducing the evaluation parameter adjustment coefficient, the original touch response evaluation parameter is finely adjusted to obtain the adjusted touch response evaluation parameter. This adjustment method takes into account the characteristics of the second touch response duration data, making the evaluation parameter more in line with the current touch response state of the display screen and improving the accuracy of judgment. In the calculation formula of the evaluation parameter adjustment coefficient, multiple factors such as the number of data of the second touch response duration, the preset response duration threshold, the adjusted response duration threshold, the touch response evaluation parameter, and the data value of the second touch response duration data are comprehensively considered. This comprehensive consideration method makes the adjustment coefficient more comprehensive and accurate, which helps to improve the reliability of the secondary judgment. When calculating the adjusted touch response evaluation parameter, a preset minimum constant is introduced to prevent the value of the function inside the square root from being 0, thus avoiding calculation errors and abnormal situations. This processing method enhances the robustness and stability of the algorithm.

[0160] By comparing the adjusted touch response evaluation parameter with the preset evaluation parameter threshold, it is possible to more sensitively determine whether there is an abnormality in the touch response. Since the evaluation parameter has been finely adjusted, the judgment result is more accurate and reliable. Through timely touch response abnormality detection and an accurate judgment process, touch response problems can be discovered and processed in a timely manner, avoiding a decline in the user experience caused by problems such as touch insensitivity or delay. At the same time, the fine adjustment of the evaluation parameter and the comprehensive consideration of multiple factors also help to reduce false alarms and missed alarms, further improving user satisfaction.

[0161] In summary, through steps such as introducing an evaluation parameter adjustment coefficient, comprehensively considering various factors, preventing numerical anomalies, and improving the sensitivity of anomaly judgment, this technical solution achieves a more accurate and comprehensive secondary judgment of the touch response of the display screen, improving the reliability of the display screen and the user experience.

[0162] A gas sampling module, which is used for:

[0163] Design a sampling pump at the rear end of the sampling probe built into the device. The measured gas sample collected by the sampling pump enters the ionization detection device through the air inlet. After the device power is turned on, automatic initialization verification is performed;

[0164] After the verification is completed, confirm the sampling operation on the display screen;

[0165] Place the sampling probe in the gas monitoring area. After placement, the gas in the gas monitoring area naturally diffuses into the sampling probe;

[0166] After the gas diffuses into the sampling probe, the display screen shows that the sampling is completed, and then the sampled gas is detected.

[0167] Specifically, through calibration, zero point and sensitivity detection, ensure that the sensor can accurately capture the concentration change of SF6 gas, thereby improving the accuracy of the entire detection system. The airtightness, cleanliness and sampling detection ensure the reliability of the sampling probe, avoiding sampling errors caused by probe problems. The detection of power, battery life and charging functions ensures the stability of the device during long-term use, avoiding detection interruption or inaccurate data caused by battery problems. The detection of clarity, brightness and touch response ensures that the operator can clearly and accurately read the detection data, improving the overall stability of the system. The lighting state and dark simulation detection enable the device to maintain a good working state under different lighting conditions, providing a better visual experience for the operator. The threshold and response detection ensure that when the SF6 gas concentration exceeds the safety threshold, the alarm can issue an alarm in a timely and accurate manner, reminding the operator to take corresponding measures to ensure personnel safety. Through the comprehensive detection of each component, ensure the integrity and reliability of the entire detection system, achieve a comprehensive and real-time monitoring of the SF6 gas concentration. The automatic initialization verification function simplifies the operation process and reduces human errors. At the same time, after the sampling is completed, the system automatically performs detection without manual intervention, improving work efficiency. By displaying the sampling and detection results in real time on the display screen, the operator can quickly understand the SF6 concentration in the gas monitoring area. This is of great significance for timely discovering and handling potential gas leakage problems. At the same time, the front end of the detector is equipped with a built-in lighting lamp, which is suitable for use in the dark environment of indoor GIS.

[0168] The SF6 gas detection unit is also used for:

[0169] The sampled gas is detected by using the ICD (Ion Capture by Drift) technology.

[0170] Among them, the process of sampling gas detection is as follows:

[0171] S1: The high-voltage pulse generator in the ion detection device generates high-voltage pulses. The high-voltage pulses serve as ion sources and simultaneously generate high-energy electrons.

[0172] S2: When the air in the ion detection device passes through the high-voltage pulses, the high-energy electrons ionize the air molecules, generating positive ions and free electrons.

[0173] S3: When the sampled gas enters the ionization region in the ion detection device through the air pump, the free electrons interact with the sampled gas molecules and attach to the gas molecules, forming negative ions.

[0174] S4: The positive ions and negative ions migrate in opposite directions in the electric field. After migration, a current is obtained. At the same time, the negative ions recombine with the positive ions after air ionization and form neutral molecules, changing the magnitude of the current. The concentration of SF6 gas is detected according to the magnitude of the current.

[0175] Finally, the obtained current is marked as the target detection gas.

[0176] Specifically, the high-energy electrons generated by the high-voltage pulses can effectively ionize air molecules and then interact with the sampled gas molecules to form negative ions. This process enables even trace amounts of SF6 gas to be effectively detected, improving the sensitivity of the system. The ICD technology can distinguish different types of gas molecules because each gas molecule interacts with electrons in a different way. In the detection of SF6 gas, the specific process of negative ion formation and migration enables the system to highly selectively identify SF6 gas, reducing the interference of other gases. Since the ionization and migration processes occur very rapidly, the system can detect the presence and concentration changes of SF6 gas in real time. This is particularly important for monitoring scenarios that require rapid response. By measuring the current obtained after migration, the system can quantitatively determine the concentration of SF6 gas. This is crucial for application scenarios that require accurate measurement of gas concentration (such as environmental monitoring, industrial safety, etc.). Due to the detection principle of the ICD technology, the background noise is usually low, which can improve the signal-to-noise ratio and thus improve the detection accuracy. At the same time, when there is a serious leak or the SF6 concentration reaches 100%, it will not pollute or damage the detector, and the high-sensitivity detection of leaks reaches 0.1 ppm. The technical parameters of the high-voltage pulse are voltage DC1500V and frequency 1.5K.

[0177] To solve the problem in the prior art that the detected gas is not effectively analyzed, resulting in the inability to accurately evaluate based on the gas analysis results, please refer to Figure 1 and Figure 2, this embodiment provides the following technical solutions:

[0178] SF6 gas analysis unit, including:

[0179] Electrical signal conversion module, used for:

[0180] Calculate the conductivity of the target detection gas;

[0181] Among them, the conductivity detection sensor is used to confirm the current value in the target detection gas;

[0182] Calculate the voltage signal in the target detection gas using Ohm's law;

[0183] The voltage signal is amplified by an amplifier and then denoised by a filter;

[0184] After denoising, the concentration data of the target detection gas is obtained.

[0185] Specifically, conductivity calculation can not only detect the concentration of SF6 gas, but also indirectly reflect other physical or chemical properties of the gas, such as purity and temperature effect (although the direct relationship between conductivity and SF6 concentration may not be direct, it can be used as an auxiliary detection method). The conductivity detection sensor is highly sensitive to current changes and can capture tiny changes in gas concentration, thereby achieving accurate detection of SF6 gas. By amplifying the voltage signal through an amplifier and using a filter for noise reduction, the system can significantly improve the signal-to-noise ratio, reduce the impact of external interference on the detection results, and improve the accuracy and reliability of detection.

[0186] Concentration data anomaly screening module, used for:

[0187] Retrieve standard concentration data of the gas monitoring area from the database;

[0188] Perform curve data conversion between standard concentration data and concentration data in target detection gas;

[0189] After the curve data is converted, the curve overlap comparison is performed;

[0190] The maximum and average values of SF6 gas ions in the gas monitoring area are obtained based on the curve overlap comparison results;

[0191] When the curves overlap and compare, the average value of each overlapping curve interaction point is taken as the average value of the SF6 gas ion, and the value that is not within the preset range of the standard concentration data curve data is taken as the highest value of the SF6 gas ion, and the highest value is abnormal data;

[0192] The highest value and the average value are stored independently, and unique numbers are generated when they are stored independently;

[0193] And label the highest value and the average value as the SF6 gas analysis data.

[0194] Specifically, retrieving the standard concentration data from the database ensures the consistency and accuracy of the data benchmark in the analysis process. Through curve data conversion and overlapping comparison, the difference between the target detection gas concentration and the standard concentration can be visually observed, providing a reliable basis for subsequent anomaly identification and risk assessment. Through curve overlapping comparison, the system can accurately calculate the highest value and the average value of the SF6 gas ions. The highest value serves as the identification criterion for abnormal data, helping to promptly detect potential gas leakage or over-standard situations. The calculation of the average value provides an overall trend and stability assessment of the gas concentration. During the curve overlapping comparison process, the highest value (abnormal data) is identified through a preset range. This method is highly flexible and accurate. It can be adjusted according to different monitoring requirements and safety standards to ensure that the system can accurately capture abnormal situations. The highest value and the average value are stored independently and a unique number is generated, which helps with centralized data management and long-term traceability. This provides great convenience for subsequent data analysis, report generation, and problem troubleshooting.

[0195] To solve the problem in the prior art that there is no targeted early warning judgment for the detected SF6 gas, resulting in the inability of staff to perform early warning operations in a timely manner, please refer to Figure 1 and Figure 2 This embodiment provides the following technical solutions:

[0196] The SF6 gas alarm transmission unit includes:

[0197] The early warning level differentiation module is used for:

[0198] Calculating the leakage rate and annual leakage rate of the SF6 gas analysis data;

[0199] Taking the calculation results of the leakage rate and annual leakage rate as the early warning data;

[0200] Comparing the early warning data with the safety data;

[0201] Judging the early warning level of the early warning data according to the comparison result;

[0202] The early warning levels are divided into level 1 alarm, level 2 alarm, and level 3 alarm.

[0203] The report generation and transmission module is used for:

[0204] Generating text and images for the early warning data in the early warning level, where the images include bar charts, line charts, and pie charts;

[0205] The generated text and image signals are transmitted to a handheld monitoring terminal and an ion detection device for display. While displaying, different types of alarms are given on the handheld monitoring terminal and the ion detection device according to different warning levels.

[0206] Specifically, quantitative analysis of SF6 gas is carried out, and the leakage rate and annual leakage rate are immediately calculated. This immediacy enables any potential leakage to be quickly detected and handled, thus avoiding the accumulation and expansion of leakage problems. According to the leakage rate and annual leakage rate, the warning data is divided into first-level, second-level, and third-level alarms. This multi-level warning mechanism helps to classify and handle leakages of different severities. Higher-level alarms can attract more attention and faster responses, thus more effectively controlling leakage problems. The warning data is presented not only in text form but also through image methods such as bar charts, line charts, and pie charts. This intuitive display method enables staff to understand the data more quickly and make accurate judgments. The generated text and image signals can be transmitted to a handheld monitoring terminal and an ion detection device to achieve remote monitoring and real-time feedback. This greatly enhances the flexibility and convenience of the system, enabling staff to grasp the monitoring situation at any time and place. According to different warning levels, the system can give alarms in different ways on the handheld monitoring terminal and the ion detection device. This diverse alarm method ensures the timeliness and effectiveness of the alarms and further improves the emergency response ability of the system.

[0207] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0208] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. SF6 gas quantitative charge detection system based on ICD ion capture, characterized by: include: SF6 gas sampling preparation unit for: Gas sampling is performed in a gas monitoring area using an ionization detection device, and before gas sampling, the ionization detection device is subjected to a functional test, and gas sampling is performed after the functional test is qualified, wherein the ionization detection device includes a display screen; SF6 gas detection unit for: The sampled gas is detected using the ICD principle, and the detected gas is marked as the target detection gas; SF6 gas analysis unit for: The target detection gas is subjected to signal data conversion, and the concentration data of the target detection gas is obtained after the signal data conversion. The data anomaly screening is performed based on the concentration data, and the SF6 gas analysis data is obtained after the data anomaly screening; SF6 gas alarm transmission unit for: Differentiate SF6 gas analysis data by warning level, generate warning reports for SF6 gas analysis data at different warning levels, and perform alarm processing based on the warning reports; The touch response detection of the display screen includes: Real-time acquisition of the corresponding touch response duration during the display screen touch process; Comparing the touch response duration corresponding to each touch of the display screen with a preset response duration threshold; When the touch response duration corresponding to the touch display screen exceeds a preset response duration threshold, the touch response duration corresponding to each touch of the display screen after the touch response duration exceeds the preset response duration threshold is recorded in real time; Acquire a touch response evaluation parameter using a touch response duration corresponding to each touch of the display screen after the touch response duration exceeds a preset response duration threshold; The touch response evaluation parameter is obtained by the following formula: ； Wherein, E represents the touch response evaluation parameter; n represents the number of times the display screen is touched after the touch response time exceeds the preset response time threshold; T i represents the touch response duration corresponding to the i-th touch on the display screen after the touch response duration exceeds the preset response duration threshold; T i-1 represents the touch response duration corresponding to the (i-1)th touch of the display screen after the touch response duration exceeds the preset response duration threshold; T y Indicates the preset response time threshold; T m Indicates the touch response duration corresponding to when the touch response duration corresponding to the touch display screen exceeds a preset response duration threshold; comparing the touch response evaluation parameter with a preset evaluation parameter threshold; When the touch response evaluation parameter exceeds a preset evaluation parameter threshold, a touch response abnormality alarm is issued.

2. The SF6 gas quantitative charge detection system based on ICD ion capture according to claim 1 is characterized in that: The SF6 gas sampling preparation unit comprises: Testing equipment function test module, used for: The ion detection equipment also includes lighting, lithium batteries, sensors, sampling probes and alarms; Before the sampling probe samples gas in the gas monitoring area, first perform a functional test on the lighting, lithium battery, display screen, sensor, sampling probe and alarm; Among them, the lighting is tested for lighting status and darkness simulation; the lithium battery is tested for power, endurance and charging function; the display is tested for clarity, brightness and touch response; the sensor is tested for calibration, zero point and sensitivity; the sampling probe is tested for air tightness, cleanliness and sampling; the alarm is tested for threshold and response; After the lighting, lithium battery, display screen, sensor, sampling probe and alarm have been tested and found to be qualified, preparations for gas sampling will be carried out.

3. The SF6 gas quantitative charge detection system based on ICD ion capture according to claim 2 is characterized in that: The touch response detection of the display screen further includes: When the touch response evaluation parameter does not exceed the preset evaluation parameter threshold, the touch response duration corresponding to each touch of the display screen before the touch response duration exceeds the preset response duration threshold is used to perform a secondary touch response abnormality judgment.

4. The SF6 gas quantitative charge detection system based on ICD ion capture according to claim 3 is characterized in that: When the touch response evaluation parameter does not exceed the preset evaluation parameter threshold, the touch response duration corresponding to each touch of the display screen before the touch response duration exceeds the preset response duration threshold is used to perform a secondary touch response abnormality judgment, including: extracting the touch response evaluation parameter; Extract the preset response time threshold; Using the touch response evaluation parameter to adjust the preset response time threshold, obtaining the adjusted response time threshold, and using the adjusted response time threshold as the second response time threshold; The adjusted response time threshold is obtained by the following formula: ； Among them, T yt Represents the adjusted response time threshold; T y Indicates the preset response time threshold; T m represents the touch response duration corresponding to when the touch response duration corresponding to the touch display screen exceeds a preset response duration threshold; E represents a touch response evaluation parameter; E0 represents a preset evaluation parameter threshold; Extracting, from the touch response durations corresponding to each touch of the display screen before the touch response duration exceeds the preset response duration threshold, touch response durations that do not exceed the preset response duration threshold but exceed the second response duration threshold; using the touch response duration that does not exceed the preset response duration threshold but exceeds the second response duration threshold as the second touch response duration data; The second touch response duration data is used to determine whether the secondary touch response is abnormal.

5. The SF6 gas quantitative charge detection system based on ICD ion capture according to claim 4 is characterized in that: Using the second touch response duration data to determine whether a secondary touch response is abnormal includes: Retrieve the second touch response duration data; Obtaining an evaluation parameter adjustment coefficient using the second touch response duration data; The evaluation parameter adjustment coefficient is obtained by the following formula: ； Wherein, ξ represents the evaluation parameter adjustment coefficient; m represents the number of data corresponding to the second touch response duration data; T y Indicates the preset response time threshold; T yt represents the adjusted response time threshold; E represents the touch response evaluation parameter; T j represents the data value corresponding to the j-th second touch response duration data; The touch response evaluation parameter is adjusted using the evaluation parameter adjustment coefficient to obtain the adjusted touch response evaluation parameter; wherein the adjusted touch response evaluation parameter is obtained by the following formula: ； Among them, E t represents the adjusted touch response evaluation parameter; E represents the touch response evaluation parameter; ξ represents the evaluation parameter adjustment coefficient; ε represents the preset minimum constant, which is used to prevent the value of the internal function of the square root from being 0; T yt Represents the adjusted response time threshold; T y Indicates the preset response time threshold; T m represents the touch response time corresponding to the touch display screen when the touch response time corresponding to the touch display screen exceeds the preset response time threshold; T max Indicates the maximum touch response duration corresponding to each touch on the display screen before the touch response duration exceeds the preset response duration threshold; comparing the adjusted touch response evaluation parameter with a preset evaluation parameter threshold; When the adjusted touch response evaluation parameter exceeds a preset evaluation parameter threshold, a touch response abnormality alarm is issued.

6. The SF6 gas quantitative charge detection system based on ICD ion capture according to claim 2, characterized in that: The SF6 gas sampling preparation unit further includes: Gas sampling modules for: The device has a sampling pump at the back end of the built-in sampling probe. The gas sample collected by the sampling pump enters the ionization detection device through the air inlet. The device automatically performs initialization verification after the power is turned on. After the verification is completed, the sampling operation is confirmed on the display screen; Place the sampling probe in the gas monitoring area. After placement, the gas in the gas monitoring area is sucked into the sampling probe through the sampling pump. After the gas is inhaled into the sampling probe, the display shows that the sampling is completed, and then the sampled gas is tested.

7. The SF6 gas quantitative charge detection system based on ICD ion capture according to claim 6, characterized in that: The SF6 gas detection unit is also used for: The sample gas is detected by using ICD ion capture technology; Among them, the sampling gas detection process is: S1: The high-voltage pulse generator in the ion detection equipment generates high-voltage pulses, which serve as ion sources and simultaneously generate high-energy electrons; S2: When the air in the ionization detection device passes through the high-voltage pulse, the high-energy electrons ionize the air molecules, generating positive ions and free electrons; S3: When the sample gas enters the ionization zone of the ion detection device through the vacuum pump, the free electrons interact with the sample gas molecules and attach to the gas molecules to form negative ions; S4: Positive ions and negative ions migrate in opposite directions in the electric field, generating current. At the same time, negative ions recombine with positive ions ionized by the air to form neutral molecules, changing the current. The SF6 gas concentration is detected based on the current. The resulting current is then labeled as the target gas.

8. The SF6 gas quantitative charge detection system based on ICD ion capture according to claim 7, characterized in that: The SF6 gas analysis unit comprises: Electrical signal conversion module, used for: Calculate the conductivity of the target detection gas; Among them, the conductivity detection sensor is used to confirm the current value in the target detection gas; Calculate the voltage signal in the target detection gas using Ohm's law; The voltage signal is amplified by an amplifier and then denoised by a filter; After denoising, the concentration data of the target detection gas is obtained.

9. The SF6 gas quantitative charge detection system based on ICD ion capture according to claim 8, characterized in that: The SF6 gas analysis unit further includes: Concentration data anomaly screening module, used for: Retrieve standard concentration data of the gas monitoring area from the database; Perform curve data conversion between standard concentration data and concentration data in target detection gas; After the curve data is converted, the curve overlap comparison is performed; The maximum and average values of SF6 gas ions in the gas monitoring area are obtained based on the curve overlap comparison results; When the curves overlap and compare, the average value of each overlapping curve interaction point is taken as the average value of the SF6 gas ion, and the value that is not within the preset range of the standard concentration data curve data is taken as the highest value of the SF6 gas ion, and the highest value is abnormal data; The highest value and the average value are stored independently, and unique numbers are generated when they are stored independently; The maximum and average values are marked as SF6 gas analysis data.

10. The SF6 gas quantitative charge detection system based on ICD ion capture according to claim 9, characterized in that: The SF6 gas alarm transmission unit comprises: Warning level differentiation module, used for: Calculate the leakage velocity and annual leakage rate based on the SF6 gas analysis data; The calculation results of leakage velocity and annual leakage rate are used as early warning data; Compare early warning data with safety data; Determine the warning level of the warning data based on the comparison results; The warning levels are divided into level one, level two and level three; Report generation and transmission module for: Generate text and images from the warning data in the warning level, where the images include bar graphs, curve graphs and pie charts; The generated text and image signals are transmitted to the handheld monitoring terminal and the ion detection device for display. At the same time, different alarms are issued on the handheld monitoring terminal and the ion detection device according to different warning levels.

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